Simon,
Wow! Really smooth, great colour and nice depth to this. Now try and imagine that placed in a setting akin to that recent image you did using pier 5. Impractical without doing a time intensive and expensive multipanel mosaic, alas.
You'd probably need to spend a disproportionate amount of time to add the tweaks you have in mind, maybe leave that to when you might be sitting around and twiddling your thumbs. Retirement supposedly gives you lots of spare time, so no rush!
On the topic of the problem you say you had with the broadband version and needing to crop, that's just part of my normal workflow. Initial tiny crop followed by an attempt at DBE immediately followed by the proper crop. It's likely one could save time by simply doing the major crop prior to DBE, but one lives in hope that one day one will get it right, and besides one simply wouldn't have known.
Lost count now of how many images you've posted, and it's difficult to navigate to find out by revisiting.
Keep well and try and have a great Bank Holiday weekend, despite what the weather throws our way.
Cheers. Ray